package com.itheima;

import java.util.function.BinaryOperator;

public class TestLambda {

    public static void main(String[] args) {
        testA();
        testC();
        testB();
        testD();
    }


    public static void testA() {
        System.out.println("-----------------------testA-------------------------");
        A a1= new A() {
            @Override
            public void show(String name, int age) {
                System.out.println(name+","+age);
            }
        };

        A a2 = (name, age) -> System.out.println(name + "," + age);
        a2.show("张三", 18);

        A a3=TestLambda::show2;
        a3.show("李四",20);

        TestLambda testLambda=new TestLambda();
        A a4=testLambda::show3;
        a4.show("王五",21);
    }

    public static void show2(String name, int age) {
        System.out.println("show2 "+name + "," + age);
    }
    public void show3(String name,int age){
        System.out.println("show3 "+name+","+age);
    }

    public static void testB() {
        System.out.println("-----------------------testB-------------------------");


        B b1 = new B() {
            @Override
            public void show(String name) {
                System.out.println(name);
            }
        };
        b1.show("hello,b1");

        B b2 = name -> System.out.println(name);
        b2.show("hello,b2");
        //创建B接口的方法引用对象
        B b3=System.out::println;
        b3.show("李明同学");
    }

    public static void testC() {
        System.out.println("-----------------------testC-------------------------");
        C c1 = new C() {
            @Override
            public String show(String name) {
                return "name = " + name;
            }
        };
        System.out.println(c1.show("Hello,c1"));
        C c2 = name -> "name = " + name;
        System.out.println(c2.show("Hello,c2"));
        //C接口方法引用对象
        C c3 = TestLambda::show4;
        String result=c3.show("zhangsan");
        System.out.println(result);
    }
    public static String show4(String name){
        return "name "+name;
    }

    public static void testD() {
        System.out.println("-----------------------testD-------------------------");
        D d1 = new D() {
            @Override
            public int max(int a, int b) {
                return Math.max(a, b);
            }
        };
        System.out.println("result1: " + d1.max(1, 2));

        D d2 = (a, b) -> a > b ? a : b;
        System.out.println("result2: " + d2.max(1, 2));

        D d3 = Math::max;
        System.out.println("result3: " +d3.max(1, 2));
    }
}